<template>
  <div class="login_container">
    <div class="login_box">
      <!--头像区域-->
      <div class="avatar_box">
        <img src="../assets/img/logo.png" alt="">
      </div>
      <!--表单区域-->
      <el-form ref="login_form_ref" label-width="0px" class="login_form" :model="form" :rules="rules">
        <!--用户名-->
        <el-form-item label="" prop="username">
          <el-input prefix-icon="el-icon-s-custom" v-model="form.username"></el-input>
        </el-form-item>
        <!--密码-->
        <el-form-item label="" prop="password">
          <el-input prefix-icon="el-icon-lock" v-model="form.password" type="password"></el-input>
        </el-form-item>
        <!--按钮-->
        <el-form-item class="btns">
          <el-button type="primary" @click="login">登录</el-button>
          <el-button type="info" @click="restLogininfo">重置</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script>
export default {
  data () {
    return {
      // 数据绑定对象
      form: {
        username: '',
        password: ''
      },
      // 表单验证对象
      rules: {
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
          { min: 3, max: 5, message: '长度在 3 到 5 个字符', trigger: 'blur' }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          { min: 6, max: 15, message: '长度在 6 到 15 个字符', trigger: 'blur' }
        ]
      }
    }
  },
  methods: {
    // 重置函数
    restLogininfo () {
      // console.log(this)
      this.$refs.login_form_ref.resetFields()
    },
    login () {
      this.$refs.login_form_ref.validate(async valid => {
        if (!valid) return
        const { data: rsp } = await this.$http.post('/', this.form)
        console.log(rsp)
        if (rsp.status !== 200) return this.$message.error('登录失败')
        this.$message.success('登录成功')
        //    将token保存到sessionStorage
        window.sessionStorage.setItem('token', rsp.token)
        this.$router.push('/talk')
      })
    }
  }
}
</script>

<style lang="less" scoped>
  .login_container {
    background-color: #BBE6D6;
    height: 100%;
  }

  .login_box {
    width: 450px;
    height: 300px;
    background-color: #fff;
    border-radius: 3px;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);

    .avatar_box {
      height: 130px;
      width: 130px;
      border: 1px solid #eee;
      border-radius: 50%;
      padding: 10px;
      box-shadow: 0 0 10px #ddd;
      position: absolute;
      left: 50%;
      transform: translate(-50%, -50%);
      background-color: #fff;

      img {
        width: 100%;
        height: 100%;
        border-radius: 50%;
        background-color: #eee;
      }
    }
  }

  .btns {
    display: flex;
    justify-content: flex-end;
  }

  .login_form {
    position: absolute;
    bottom: 0;
    width: 100%;
    padding: 0 20px;
    box-sizing: border-box;
  }

</style>
